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R31538 Cobalt vs. C77300 Nickel Silver

R31538 cobalt belongs to the cobalt alloys classification, while C77300 nickel silver belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is C77300 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 86
42
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
540

Thermal Properties

Latent Heat of Fusion, J/g 320
180
Melting Completion (Liquidus), °C 1360
940
Melting Onset (Solidus), °C 1290
920
Specific Heat Capacity, J/kg-K 450
390
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
6.3

Otherwise Unclassified Properties

Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.1
3.5
Embodied Energy, MJ/kg 110
56
Embodied Water, L/kg 530
310

Common Calculations

Stiffness to Weight: Axial, points 15
7.7
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 34 to 45
19
Strength to Weight: Bending, points 27 to 32
19
Thermal Shock Resistance, points 25 to 33
17

Alloy Composition


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Aluminum (Al), % 0
0 to 0.010
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
46 to 50
Iron (Fe), % 0 to 0.75
0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
9.0 to 11
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.25
Silicon (Si), % 0 to 1.0
0.040 to 0.25
Zinc (Zn), % 0
37.9 to 45
Residuals, % 0
0 to 0.5